/Engine/Source/Developer/MeshUtilities/Public/MeshUtilities.h
Calculates (new) non-overlapping UV coordinates for the given Raw Mesh
bool - whether or not generating the UVs succeeded
bool GenerateUniqueUVsForStaticMesh ( const [FRawMesh](API\Runtime\RawMesh\FRawMesh) & RawMesh, int32 TextureResolution, [TArray](API\Runtime\Core\Containers\TArray)< FVector2f > & OutTexCoords ) const